Mary has type a blood. her son bill has type ab blood. which blood type does bill's dad have if he is homogenous for blood type?
a
b
ab
o

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.